Pianoforte- action



'UNITED STATES PATENT OFFICE.

GEORGE HOWE, OF BOSTON, MASSACHUSETTS.

PIANOFORTE-ACTION.

Specification of Letters Patent No. 9,282, dated September 28, 1852.

To all whom 25 may conce/m:

Be it known that I, GEORGE Howe, of Boston, in the count-y of Suffolkand State of Massachusetts, have invented certain new and usefulImprovements in Pianoforte- ActionsA and that the following description,taken in connection with the accompanying drawings, hereinafter referredto, forms a full and exact specification of the same, wherein I have setforth the nature and principles of my said improvements by which myinvention may be distinguished from others of a similar class, togetherwith such parts as I claim and desire to have secured to me by LettersPatent.

The accompanying drawing which is a side elevation of the action,represents my improvements.

A serious objection has hitherto been eX- perienced in pianoforteactions arising from the noise or slapping of the fly of the jack, whenit rebounded against its stem after having lifted the hammer. Thiseffect was partly produced by the cloth or packing against which the flyof the jack struck,

becoming hardened, as the long distance which the fly had to travelcaused it to rebound with great force against the cloth. By myimprovements this objection is obviated, the fly being so jointed as torebound but a very little distance and consequently with very littlenoise.

a a in the drawing represents the key lever turning on a fulcrum at Z)and having on one end the back catch c.

and raise the hammer /L in the same manner as in ordinary pianofortes.The end of the jack strikes, when it is retracted by the spring z'against the regulating button k. It will be observed that the fly Z clof the jack is pointed at c, so as to constitute a lever, the short armof which when it rebounds, strikes against the regulating button 7c. Bythus jointing the fly or lever al Z so close to the regulating button,the short arm of the fly will have but very little distance to traveland consequently rebound without any noise or slapping against the clothof the regulating button.

Having thus described my improvements in pianoforte actions, I state myclaim as follows:

What I claim as my invention and desire to have secured to me by LettersPatent is,

Jointing the fly of the jack to the .stem of the same, so as toconstitute a lever, the short arm of which has to move but littledistance before it strikes against the regulating button, for thepurpose of preventing any noise or slapping as above set forth.

GEO. HOWE. Witnesses:

JOSEPH GAVETT, EDWIN BROWN.

